Powder Coating Primers


Coating Primers, Epoxy Polyester Powders, Epoxy Powders

4th July 2020 – ThermaPrime Series

Tough, durable,
protective

ThermaPrime is an epoxy and epoxy-polyester range of coating primers designed for interior or exterior use. Our primers deliver hard, durable and protective finish with wide scope of colours available.

Corrosion
resistance

Exclusive combination of specially formulated epoxy and polyester resins to provide excellent corrosion and chemical resistance for a variety of specialists applications.

Colour
variations

We can work with you to create your bespoke finish. Colour can be matched to customer supplied samples or to many of the RAL and BS ranges.

Powder Coating Primers


  • ThermaPrime PBP 110
    Epoxy powder coating barrier primer for interior use or as a primer or barrier coating.
  • ThermaPrime PPC 120
    Zinc-free epoxy-polyester powder coating primer. Designed for improved corrosion protection of mild steel.
  • ThermaPrime PZP 130
    Epoxy powder coating primer. It contains zinc phosphate. Created to assure improved corrosion protection of mild steel.
  • ThermaPrime AGP 135
    Epoxy-polyester anti-gassing powder coating primer. Formulated for use on problem substrates that are prone to out-gassing.

ThermaPrime is an advanced range of powder coating primers made from epoxy and epoxy-polyester blends. Designed for both indoor and outdoor applications, these primers provide a strong, long-lasting, and protective finish. Whether you’re coating metal surfaces, machinery, or furniture, ThermaPrime guarantees your project remains durable and protected for years to come.

The ThermaPrime range features a variety of advanced powder coating primers tailored to provide exceptional protection and durability for different applications. Our primers are designed to tackle a wide array of challenges, from enhancing adhesion and preventing corrosion to addressing out-gassing issues on complex substrates. These primers ensure a strong, long-lasting finish and offer excellent over-coating and anti-corrosive properties. Whether you need a primer for interior or exterior use, or one that handles extreme conditions and sharp edges, ThermaPrime has you covered, making it the ideal choice for a broad spectrum of industrial and decorative projects.

The Benefits of ThermaPrime Powder Coating Primers

When you choose ThermaPrime powder coating primers, you’re investing in more than just surface protection. Here are some of the key benefits you can expect:

Hard, Durable Finish

ThermaPrime primers deliver a tough, hard coating that protects the surface underneath from wear and tear. This makes them ideal for environments where the coated object may be subjected to heavy use or exposure to harsh conditions. Whether you’re coating machinery, metal parts, or architectural components, ThermaPrime ensures the surface remains strong and damage-resistant.

Corrosion Protection

Rust and corrosion can be serious problems, especially for outdoor metal structures. ThermaPrime’s epoxy-based primers offer excellent protection against corrosion by creating a barrier between the metal and the environment. This is particularly important for projects exposed to moisture, humidity, and other harsh conditions that could lead to rust.

Versatile for Indoor and Outdoor Use

While some primers are designed specifically for indoor or outdoor use, ThermaPrime offers versatility in both environments. The epoxy-polyester blend is particularly suited for exterior use, as it provides UV resistance and weather protection. For indoor projects, the epoxy range offers a hard, smooth finish that protects surfaces from scratches and general wear.

Wide Range of Colors Available

No need to compromise on aesthetics when using ThermaPrime primers. We offer a wide range of colours, ensuring that your project looks as good as it performs. Whether you need a neutral colour to blend with your final coat or a bold colour to stand out, ThermaPrime has options to meet your needs.

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ThermaPrime PBP 110

Epoxy Powder Coating Barrier Primer
Designed for interior use or as a primer or barrier coating. This powder is specially formulated on selected epoxy resins and pigments to give a tough decorative finish on difficult substrates with excellent out-gassing and over-coating properties.

Mechanical Tests


Flexibility (cylindrical mandrel)ISO 1519Pass minimum 5mm
Buchholz HardnessISO 2815Pass minimum 80
ImpactISO 6272-2Pass minimum 2.5Nm
Erichsen cuppingISO 1520Pass minimum 5mm
Adhesion (2mm cross hatch)ISO 2409Pass Gt 0
Scratch ResistanceISO 1518-1Pass 4 Kg

Chemical Tests


HumidityISO 6270Pass 1000 hours
Boiling Water2 hoursNo defects or detachments
Salt Spray ResistanceASTM B117Pass 1000 hours, 2mm creep from scratch
Sulphur DioxideISO 3231After 24 cycles, infiltration < 1mm from scratch
Mortar ResistanceEN 12206-1Easy to remove, no staining

Test Conditions:
Unless otherwise specified, all tests have been carried out under laboratory conditions on 0.8mm zinc phosphate steel panels and are given for guidance only. Actual product performance will depend on the circumstances under which the product is used. A powder coating dry film thickness of 60 – 70 microns was used.

ThermaPrime PBP 110 technical data

Epoxy Powder Coating Barrier Primer

Thermasets’ Thermaprime PBP 110 TLE-C540-M is Grey RAL 7035 but a similar powder coating can be matched to customer supplied samples or to many of the RAL and BS colour ranges.

Approx 3%

Approx 1.8

Suitable for electrostatic spray

10 minutes @ 180°C peak metal temperature

For maximum adhesion the substrate must be thoroughly cleaned of grease, rust etc. by shot blasting, solvent or chemical degreasing. For maximum protection it is essential to pretreat the substrate prior to the application of Thermaset Limited Thermaprime PBP 110 Epoxy Powder Coating Barrier Primer.

Recommended substrate preparation is by solvent or chemical degreasing followed by grit blasting to minimum SA 2.5, Rz 35-65μm, Ra 6-10 μm and/or degreasing and zinc phosphating.

If using chemical pretreatments, follow advice from the pretreatment chemical supplier.

Not suitable for exterior exposure. For exterior applications Thermaprime PBP 110 Epoxy Powder Coating Barrier Primer TLE-C540-M should be over-coated within 2-3 weeks with a suitable exterior grade coating such as an architectural grade polyester powder coating or polyurethane wet paint top coat.

Generally good resistance to acids, alkalis and oil at normal temperatures.

Thermaset Limited Thermaprime PBP 110 Epoxy Powder Coating Barrier Primer TLE-C540-M is suitable for use on items covered by Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (Directive 11/65/EU, ROHS 2). Product contains none (or less than the maximum allowed amount) of the following restricted chemicals: Lead, Mercury, Cadmium, Hexavalent Chromium or their compounds, Poly-brominated biphenyl (PBB) or Poly-brominated diphenyl ether (PDBE) flame retardants, Bis(2-ethylhexyl) phthalate (DEHP), Benzyl butyl phthalate (BBP), Dibutyl phthalate (DBP), Diisobutyl phthalate (DIBP).

ThermaPrime PBP 110
Epoxy Barrier Primer


Technical Data Sheet

Download

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ThermaPrime PPC 120

Anticorrosive Powder Coating Primer
Zinc-free epoxy-polyester powder coating primer designed for improved corrosion protection of mild steel. It contains advanced anticorrosive pigments which have a passivating effect on the steel substrate. If penetrating damage is done to the coating, the Thermaprime PPC 120 system will considerably limit the spread of corrosion.

Mechanical Tests


Flexibility (cylindrical mandrel)ISO 1519Pass minimum 5mm
Buchholz HardnessISO 2815Pass minimum 80
ImpactISO 6272-2Pass minimum 2.5Nm
Erichsen cuppingISO 1520Pass minimum 5mm
Adhesion (2mm cross hatch)ISO 2409Pass Gt 0

Corrosion Tests


HumidityISO 6270Pass 1000 hours
Boiling Water2 hoursNo defects or detachments
Neutral Salt SprayASTM B117Pass 1000 hours; Corrosion creep < 2mm from scribe; Adhesion Gt0

Test Conditions:
Unless otherwise specified, all tests have been carried out under laboratory conditions on 0.8mm zinc phosphate steel panels and are given for guidance only. Actual product performance will depend on the circumstances under which the product is used. A powder coating dry film thickness of 60 – 70 microns was used.

ThermaPrime PPC 120 technical data

Anticorrosive Powder Coating Primer

Light grey is available as standard. Other colours can be manufactured to order.

Approx 3%

Approx 1.8

Suitable for electrostatic spray

10 minutes @ 180°C peak metal temperature

For maximum adhesion the substrate must be thoroughly cleaned of grease, rust etc.

Recommended substrate preparation is by solvent or chemical degreasing followed by grit blasting to minimum SA 2.5, Rz 35-65μm, Ra 6-10 μm and/or degreasing and zinc phosphating.

If using chemical pretreatments, follow advice from the pretreatment chemical supplier.

Thermaset Limited Thermaprime PBP 110 Epoxy Powder Coating Barrier Primer TLE-C540-M can be applied by manual or automatic electrostatic spray equipment, an even dry film thickness of 60 – 100 microns is recommended.

Not suitable for exterior exposure. For exterior applications Thermaprime PBP 110 Epoxy Powder Coating Barrier Primer TLE-C540-M should be over-coated within 2-3 weeks with a suitable exterior grade coating such as an architectural grade polyester powder coating or polyurethane wet paint top coat.

Generally good resistance to acids, alkalis and oil at normal temperatures.

Thermaset Limited Thermaprime PBP 110 Epoxy Powder Coating Barrier Primer TLE-C540-M is suitable for use on items covered by Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (Directive 11/65/EU, ROHS 2). Product contains none (or less than the maximum allowed amount) of the following restricted chemicals: Lead, Mercury, Cadmium, Hexavalent Chromium or their compounds, Poly-brominated biphenyl (PBB) or Poly-brominated diphenyl ether (PDBE) flame retardants, Bis(2-ethylhexyl) phthalate (DEHP), Benzyl butyl phthalate (BBP), Dibutyl phthalate (DBP), Diisobutyl phthalate (DIBP).

ThermaPrime PPC 120
Anticorrosive Coating Primer


Technical Data Sheet

Download

3

ThermaPrime PZP 130

Zinc Phosphate Powder Coating Primer
Epoxy powder coating primer containing zinc phosphate. It is designed for improved corrosion protection of mild steel. Recommended for use as an anti-corrosive primer where good quality chemical conversion pre-treatment is recommended or specified but may not be available. It is intended to be over-coated with a suitable product from our range of coatings, depending on the end-use application.

We recommend that the primer should be partially cured prior to application of the topcoat. When the topcoat is cured for a minimum of ten minutes at 180 degrees C metal temperature (longer if specified for the topcoat) the primer will also fully cure.

The substrate must be in a clean, rust-free condition prior to application of the primer. Film thickness of the primer coat should be controlled to assist application of the second coat: trials are recommended to optimise application conditions.

Mechanical Tests

Flexibility (cylindrical mandrel)ISO 1519Pass minimum 5mm
Buchholz HardnessISO 2815Pass minimum 80
ImpactISO 6272-2Pass minimum 2.5Nm
Erichsen cuppingISO 1520Pass minimum 5mm
Adhesion (2mm cross hatch)ISO 2409Pass Gt 0

Corrosion Tests

HumidityISO 6270Pass 1000 hours
Boiling Water2 hoursNo defects or detachments
Neutral Salt SprayASTM B117Pass 1000 hours; Corrosion creep < 2mm from scribe; Adhesion Gt0

Test Conditions:
Unless otherwise specified, all tests have been carried out under laboratory conditions on 0.8mm degreased and zinc phosphated steel panels. A Thermaprime PZP 130 dry film thickness of 60 – 70 microns was used, followed by a topcoat of RAL 9010 architectural polyester of 60 – 70 microns. Actual product performance will depend on the circumstances under which the product is used.

ThermaPrime PZP 130 technical data

Zinc Phosphate Powder Coating Primer

Dark grey (Code TLE-6226-M) is available as standard. Other colours can be manufactured to order.

Approximately 5%

1.5 g/cm3

Suitable for electrostatic spray

Partial cure 5 minutes @ 180°C metal temperature
Full cure 10 minutes @ 180°C metal temperature or longer to suit topcoat

Thermaset Ltd’s Thermaprime PZP 130 adheres to most metals and does not require other primers. Articles to be coated must be free from rust, grease, oil and mill scale. Solvent vapour degreasing is usually adequate.

Grit blasting to minimum SA 2.5, Rz 35-65μm, Ra 6 10 μm and phosphate or chromate conversion coatings may be used if even greater corrosion protection is specified. If using chemical pretreatments, follow advice from the pretreatment chemical supplier.

Care should be taken not to contaminate primer surface before over-coating. Should oil contamination by handling without gloves or over-curing of primer have occurred, the primer may need degreasing with a mild detergent and/or slight abrasion with 800 sandpaper. Remove dust by blowing with clean dry air.

Thermaprime PZP 130 should be applied by corona electrostatic spray equipment, with an even dry film thickness of 55 – 65 μm. Tests should be carried out to ensure suitability prior to full-scale application. Please note we strongly advise against the use of pre-treatment over the zinc primer between coats. Subsequent topcoats may require modified application conditions, e.g. lower voltage.

Thermaset Limited Thermaprime PZP 130 Powder Coatings are suitable for use on items covered by Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (Directive 11/65/EU, ROHS 2). This product contains none (or less than the maximum allowed amount) of the following restricted chemicals: Lead, Mercury, Cadmium, Hexavalent Chromium or their compounds, Poly brominated biphenyl (PBB) or Poly-brominated diphenyl ether (PDBE) flame retardants, Bis(2-ethylhexyl) phthalate (DEHP), Benzyl butyl phthalate (BBP), Dibutyl phthalate (DBP), Diisobutyl phthalate (DIBP)

ThermaPrime PZP 130
Zinc Phosphate Powder Coating Primer


Technical Data Sheet

Download

4

ThermaPrime AGP 135

Antigassing Powder Coating Primer
Epoxy-polyester anti-gassing powder coating primer designed for use on problem substrates that are prone to out-gassing such as cast aluminium or steel, galvanized steel, Zamak etc.

Mechanical Tests

Flexibility (cylindrical mandrel)ISO 1519Pass minimum 5mm
Buchholz HardnessISO 2815Pass minimum 80
ImpactISO 6272-2Pass minimum 2.5Nm
Erichsen cuppingISO 1520Pass minimum 5mm
Adhesion (2mm cross hatch)ISO 2409Pass Gt 0

Corrosion Tests

HumidityISO 6270Pass 1000 hours
Boiling Water2 hoursNo defects or detachments
Neutral Salt SprayASTM B117Pass 1000 hours; Corrosion creep < 2mm from scribe; Adhesion Gt0

Test Conditions:
Unless otherwise specified, all tests have been carried out under laboratory conditions on 0.8mm degreased and zinc phosphated steel panels. A Thermaprime AGP 135 dry film thickness of 60 – 70 microns was used, followed by a topcoat of RAL 9010 architectural polyester of 60 – 70 microns. Actual product performance will depend on the circumstances under which the product is used.

ThermaPrime AGP 135 technical data

Antigassing Powder Coating Primer

Light grey is available as standard. Other colours can be manufactured to order.

70% – 80%

1.50-1.65 g/cm3

Suitable for electrostatic spray

AGP 135 should be fully cured before applying a top-coat:

Minimum 10 minutes @ 180°C peak metal temperature

For maximum adhesion the substrate must be thoroughly cleaned of grease, rust etc.

Recommended cast steel preparation is by solvent or chemical degreasing followed by grit blasting to minimum SA 2.5, Rz 35-65μm, Ra 6-10 μm then degreasing and phosphating.

For cast aluminium recommendation is for solvent or chemical degreasing followed by sweeping then degreasing and chromating (chromate-free pretreatments are available). If using chemical pretreatments, follow advice on performance requirements from the pretreatment chemical supplier.

ThermaPrime AGP 135 should be applied by corona electrostatic spray equipment, with an even dry film thickness of 60 – 80 μm. Minimum of 60 μm is recommended to achieve good protection.

Thermaset Limited Thermaprime Powder Coatings are suitable for use on items covered by Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (Directive 11/65/EU, ROHS 2). This product contains none (or less than the maximum allowed amount) of the following restricted chemicals: Lead, Mercury, Cadmium, Hexavalent Chromium or their compounds. Poly-brominated biphenyl (PBB) or Poly-brominated diphenyl ether (PDBE) flame retardants. Bis(2-ethylhexyl) phthalate (DEHP), Benzyl butyl phthalate (BBP), Dibutyl phthalate (DBP), Diisobutyl phthalate (DIBP).

ThermaPrime AGP 135
Antigassing Powder Coating Primer


Technical Data Sheet

Download

12 months when stored in cool (below 25o C) dry conditions. Open boxes must be resealed.

This product is intended for use only by professional applicators in industrial environments. Consult the relevant Material Safety Data Sheet available from Thermaset.

Our data sheets and sales literature are issued for the purpose of supplying product information. The information in this data sheet is not intended to be exhaustive and is based on the present state of our knowledge and on current laws: any person using the product for any purpose other than that specifically recommended in the technical data sheet without first obtaining written confirmation from us as to the suitability of the product for the intended purpose does so at his own risk. It is always the responsibility of the user to take all necessary steps to fulfil the demands set out in the local rules and legislation. Always read the Material Safety Data Sheet and the Technical Data Sheet for the product if available. All advice we give or any statement made about the product by us (whether in this data sheet or otherwise) is correct to the best of our knowledge but we have no control over the quality or condition of the substrate or the many factors affecting the use and application of the product. Therefore, unless we specifically agree in writing, we do not accept any liability whatsoever for the performance of the product or for any loss or damage arising out of the use of the product. All products supplied and technical advices given are subject to our standard terms and conditions of sale. You should request a copy of this document and review it carefully. The information contained in this data sheet is subject to modification from time to time in the light of experience and our policy of continuous improvement. It is the user’s responsibility to verify that this data sheet is current prior to using the product.

Relevant Powder Coatings


Epoxy Powder Coatings


Epoxy Powders

29th June 2020 – Epoxy Powders

Hard, durable,
protective

Thermaset Limited offers a range of epoxy powder coatings designed for interior use to assure hard durable protective finishes. Wide scope of colours and gloss levels available.

Chemical
resistance

The unique combination of specially formulated epoxy resins to provide excellent corrosion and chemical resistance for a variety of applications i.e. automotive components, household goods.

Excellent
adhesion

Easy-to-use with good electrostatic charging properties and excellent transfer efficiency. Improved adhesion can be achieved by applying surface pretreatments procedures.

Epoxy powder coatings

Gives hard durable protective finishes with excellent adhesion and chemical resistance. Epoxy powder coating has good electrostatic charging properties and excellent transfer efficiency.

Recommended uses include general industrial components and applications requiring a good all-round coating, such as household goods. When long term exterior durability or heat stability is essential a powder from our range of epoxy-polyesters and polyesters should be selected.

Epoxy Powder Coating

Gloss, Semi-Gloss, Matt

Mechanical Tests


Flexibility (cylindrical mandrel)ISO 1519Pass minimum 5mm
Buchholz HardnessISO 2815Pass minimum 80
ImpactISO 6272-2Pass > 25 Kg cm
Erichsen cuppingISO 1520Pass > 5 mm
Adhesion (2mm cross hatch)ISO 2409Pass Gt 0

Chemical Tests


Constant HumidityISO 6270Pass 1000 hours
Boiling Water2 hoursNo defects or detachments
Salt Spray ResistanceISO 9227Pass 250 hours, < 2mm creep from scribe
Neutral Salt Fog2 hoursNo defects or detachments
Mortar ResistanceEN 12206-1Easy to remove, no staining

Test Conditions:
Unless otherwise specified, all tests have been carried out under laboratory conditions on 0.8mm degreased and zinc phosphate steel panels and are given for guidance only. Actual product performance will depend on the circumstances under which the product is used. A powder coating dry film thickness of 60 – 70 microns was used.

1

Specification of Powders

Epoxy Powder Coatings – Gloss, Semi-Gloss, Matt

Thermaset Limited epoxy powder coatings are formulated to give hard durable protective finishes with excellent adhesion and chemical resistance. The range is particularly suited where protection from aggressive environments is required and long term exposure to weathering or ultra violet light is not expected.

Thermaset Limited epoxy powder coatings are available in a wide range of RAL and BS colours or can be matched to user requirements, in smooth or textured finishes.

Suitable for electrostatic spray.

See box label for recommended curing conditions. Typical values are:

10 minutes @ 180°C peak metal temperature

1.3 to 1.8 g/cm3 depending on colour.

12 months when stored in cool (below 25o C) dry conditions. Open boxes must be resealed.

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Properties of Powders

Epoxy Powder Coatings – Gloss, Semi-Gloss, Matt

For maximum adhesion the substrate must be thoroughly cleaned of grease, rust etc. by shot blasting, solvent or chemical degreasing. For maximum protection it is essential to pretreat the substrate prior to the application of Thermaset Limited Epoxy Powder Coating.

Aluminium
Aluminium components should receive a full multi-stage chromate conversion coating or similar chrome-free pretreatment to clean and prepare the substrate. Detailed advice should be sought from the pretreatment supplier.

Galvanized steel
Galvanized steel requires multi-stage pretreatment with either zinc phosphate or chromate conversion. Depending on the type of galvanizing, degassing or use of anti-bubbling additives may be required. Detailed advice should be sought from the pretreatment supplier.

Ferrous substrates
Ferrous substrates require iron or zinc phosphate pretreatment. Detailed advice should be sought from the pretreatment supplier.

Thermaset Limited epoxy powder coatings can be applied by manual or automatic electrostatic spray equipment, general recommendation is for a film thickness of 60-100 microns depending on covering power and colour, with a minimum recommendation of 60 microns.

Generally good resistance to acids, alkalis and oil at normal temperatures.

Not designed for long term exterior exposure. Some chalking and loss of gloss can be expected after 3 – 6 months continuous outdoor exposure.

3

More Details

Epoxy Powder Coatings – Gloss, Semi-Gloss, Matt

This product is intended for use only by professional applicators in industrial environments. Consult the relevant Material Safety Data Sheet available from Thermaset.

Our data sheets and sales literature are issued for the purpose of supplying product information. The information in this data sheet is not intended to be exhaustive and is based on the present state of our knowledge and on current laws: any person using the product for any purpose other than that specifically recommended in the technical data sheet without first obtaining written confirmation from us as to the suitability of the product for the intended purpose does so at his own risk. It is always the responsibility of the user to take all necessary steps to fulfil the demands set out in the local rules and legislation. Always read the Material Safety Data Sheet and the Technical Data Sheet for the product if available. All advice we give or any statement made about the product by us (whether in this data sheet or otherwise) is correct to the best of our knowledge but we have no control over the quality or condition of the substrate or the many factors affecting the use and application of the product. Therefore, unless we specifically agree in writing, we do not accept any liability whatsoever for the performance of the product or for any loss or damage arising out of the use of the product. All products supplied and technical advices given are subject to our standard terms and conditions of sale. You should request a copy of this document and review it carefully. The information contained in this data sheet is subject to modification from time to time in the light of experience and our policy of continuous improvement. It is the user’s responsibility to verify that this data sheet is current prior to using the product.

Thermaset Limited Epoxy powder coatings are suitable for use on items covered by Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (Directive 11/65/EU, ROHS 2). Products contains none (or less than the maximum allowed amount) of the following restricted chemicals: Lead, Mercury, Cadmium, Hexavalent Chromium or their compounds, Poly-brominated biphenyl (PBB) or Poly-brominated diphenyl ether (PDBE) flame retardants. Bis(2-ethylhexyl) phthalate (DEHP), Benzyl butyl phthalate (BBP), Dibutyl phthalate (DBP),Diisobutyl phthalate (DIBP), Bis(2-ethylhexyl) phthalate (DEHP), Benzyl butyl phthalate (BBP), Dibutyl phthalate (DBP), Diisobutyl phthalate (DIBP).

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Technical Sheets

Epoxy Powder Coatings – Gloss, Semi-Gloss, Matt

Epoxy
Powder Coating


Technical Data Sheet
Gloss, Semi-Gloss, Matt

Download

Relevant Powder Coatings

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